20021222001000 has 256 divisors, whose sum is σ = 70343187333120. Its totient is φ = 4697060640000.

The previous prime is 20021222000981. The next prime is 20021222001017. The reversal of 20021222001000 is 10022212002.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8762544 + ... + 10808543.

It is an arithmetic number, because the mean of its divisors is an integer number (274778075520).

Almost surely, 2^{20021222001000} is an apocalyptic number.

20021222001000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20021222001000 is an abundant number, since it is smaller than the sum of its proper divisors (50321965332120).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20021222001000 is a wasteful number, since it uses less digits than its factorization.

20021222001000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19571153 (or 19571139 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 20021222001000 its reverse (10022212002), we get a palindrome (20031244213002).

The spelling of 20021222001000 in words is "twenty trillion, twenty-one billion, two hundred twenty-two million, one thousand".